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https://issues.apache.org/jira/browse/KAFKA-9315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16999495#comment-16999495
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ASF GitHub Bot commented on KAFKA-9315:
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cmccabe commented on pull request #7851: KAFKA-9315: The Kafka Metrics class
should clear the mbeans map when closing
URL: https://github.com/apache/kafka/pull/7851
The JmxReporter should clear the mbeans map when closing. Otherwise,
metrics may be incorrectly re-registered if the JmxReporter class is
used after it is closed.
For example, calling JmxReporter#close followed by
JmxReporter#unregister could result in some of the mbeans that were
removed in the close operation being re-registered.
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> The Kafka Metrics class should clear the mbeans map when closing
> ----------------------------------------------------------------
>
> Key: KAFKA-9315
> URL: https://issues.apache.org/jira/browse/KAFKA-9315
> Project: Kafka
> Issue Type: Bug
> Components: metrics
> Reporter: Colin McCabe
> Assignee: Colin McCabe
> Priority: Major
>
> The JmxReporter should clear the mbeans map when closing. Otherwise, metrics
> may be incorrectly re-registered if the JmxReporter class is used after it is
> closed.
> For example, calling JmxReporter#close followed by JmxReporter#unregister
> could result in some of the mbeans that were removed in the close operation
> being re-registered.
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